Originally Posted by
Bob Ross
Is that how all modern cyclometers (e.g., Garmin, Wahoo, etc.) measure elevation, via atmospheric pressure? I always wondered about that...seemed overkill to be pinging the GPS satellite to measure altitude dynamically.
I don't know. But I expect most do use a barometric sensor today that show elevation.
As for GPS, the devices don't ping the satellite. The GPS in our Garmin and other devices is only a receiver And from the same GPS signals a altitude is calculated or can be calculated. Though few display that because the amount of error in that is quite a bit more than the 30 or so feet a GPS might be off in the horizontal position.